Reinforced-plaster body.



W. E. CONNIFF. REINFORCED PLASTER BODY. APPLICATION FILED NOV. I5. 1915.

Patented June 11, 1918.

Wilma element embedded therein,

WILLIAM E. CONNIFF, OI KANSAS CITY, MISSOURI,

ASSIGNOR OF ONE-HALF T0 EDWARD J. CUTTING, OF KANSAS CITY, MISSOURI.

REINEORCED-PLASTER BODY.

Specification of Letters Iatent.

Patented June 11, 1918.

Application filed November 15, 1815. Serial No. 61,525.

To all whom it may concern: I

Be it known that I, WILLIAM E. CONNIFF, a citizen of the United States,residing at Kansas City, in the county of Jackson and State of Missouri,have invented a certain new and useful Improvement in Reinforced PlasterBodies, of which the following is a specification.

My invention relates to improvements in reinforced plaster bodies.

The object of my invention is to provide a molded body having areinforcing metallic which is adapted for structural beams, joists,etc., firmly hold nails, which may be driven therein.

For efiecting'this object, I provide a body and which is adapted tocomposed of 'jcementitions material, such as a body anda board shownnailed to the imilar reference characters designate similar parts in thedifferent views.

Cementitious material 1, preferably com-.

prising plaster mixed with yielding fibrous material 2, such as woodfiber, is placed in a plastic condition in a mold of suitable form andcontaining metallic reinforcing material 3, preferably expanded metal,or some other perforate metallic material, and then permitted to dry andharden.

The reinforcing metal greatly strengthens the body, and the presence inthe bod of the yielding fibrous material imparts to t e body the qualityofladheringto and firmly holding a nail 4, or such other device, such asa screw or bolt, which may be driven therein.

purposes, such as for use in spikes, bolts or screws It is well knownthat nails driven into ordinary plaster or cement will effect a crumblinof the material which will not permit of the nails being firmly held. Byemploying a yielding fibrous material, such aswood fiber, mixed with theplaster, nails or other like devices when driven into a body composed ofsuch materials, will be firmly held and engaged by the yielding fibrousmaterial. For this reason, structural bodies embodying my invention arewell adapted for employment as supports for boards or laths which arenailed thereto. Bodies constructed in accordance with my invention are,therefore, well adapted for use as joists, studding, rafters etc.

As is shown in the drawin the reinforcg ing material 3 is embedded flushwith the surface of the body and Wholly embraces the sides and edgesthereof. By having the reinforcing material embedded at the surface,when a nail or a spike is driven into the body, the latter will not becracked and have large chunks broken out, as would occur if thereinforcing material were embedded at a substantial distance from thesurface of the body. Thus with my improved construe tion, nails driveninto the bod will be securely nailed therein and -wi not break chun sout of the surface thereof.

In Fig. 2, I have shown a board 5 fastened,

by a nail 4 to a body embodying my invention.

Modifications of my invention, within the scope of the appended claims,may be made wit out departing from its spirit.

What I claim is:-

1. A body composed of plaster mixed with wood fiber, and perforatereinforcing material embracing the sides and edges of the bod andembedded therein flush with the 'sur ace thereof.

2. A body composed of cementitious material mixed withfyielding fibrousmaterial, and perforate rein orcing material embedded therein flush withthe surface thereof.

In testimony whereof I have signed my name to this specif cation.

.- WILLIAM E. CONNIFF.

